1 files changed, 425 insertions, 0 deletions

diff --git a/multiload/load-graph.c b/multiload/load-graph.c
new file mode 100644
index 00000000..9b294f33
--- /dev/null
+++ b/multiload/load-graph.c
@@ -0,0 +1,425 @@
+#include <config.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <signal.h>
+#include <dirent.h>
+#include <string.h>
+#include <time.h>
+#include <glib.h>
+#include <gdk/gdkx.h>
+#include <gtk/gtk.h>
+#include <mate-panel-applet.h>
+#include <mate-panel-applet-mateconf.h>
+
+#include "global.h"
+
+
+/*
+  Shifts data right
+
+  data[i+1] = data[i]
+
+  data[i] are int*, so we just move the pointer, not the data.
+  But moving data loses data[n-1], so we save data[n-1] and reuse
+  it as new data[0]. In fact, we rotate data[].
+
+*/
+
+static void
+shift_right(LoadGraph *g)
+{
+	unsigned i;
+	int* last_data;
+
+	/* data[g->draw_width - 1] becomes data[0] */
+	last_data = g->data[g->draw_width - 1];
+
+	/* data[i+1] = data[i] */
+	for(i = g->draw_width - 1; i != 0; --i)
+		g->data[i] = g->data[i-1];
+
+	g->data[0] = last_data;
+}
+
+
+/* Redraws the backing pixmap for the load graph and updates the window */
+static void
+load_graph_draw (LoadGraph *g)
+{
+    GtkStyle *style;
+    guint i, j;
+
+    /* we might get called before the configure event so that
+     * g->disp->allocation may not have the correct size
+     * (after the user resized the applet in the prop dialog). */
+
+    if (!g->pixmap)
+		g->pixmap = gdk_pixmap_new (gtk_widget_get_window (g->disp),
+					    g->draw_width, g->draw_height,
+					    gtk_widget_get_visual (g->disp)->depth);
+	
+    style = gtk_widget_get_style (g->disp);
+
+    /* Create GC if necessary. */
+    if (!g->gc)
+    {
+		g->gc = gdk_gc_new (gtk_widget_get_window (g->disp));
+		gdk_gc_copy (g->gc, style->black_gc);
+    }
+
+    /* Allocate colors. */
+    if (!g->colors_allocated)
+    {
+		GdkColormap *colormap;
+
+		colormap = gdk_drawable_get_colormap (gtk_widget_get_window (g->disp));
+		
+		for (i = 0; i < g->n; i++)
+	 	   gdk_colormap_alloc_color (colormap, &(g->colors [i]),
+					     FALSE, TRUE);
+
+		g->colors_allocated = 1;
+    }
+	
+    /* Erase Rectangle */
+    gdk_draw_rectangle (g->pixmap,
+			style->black_gc,
+			TRUE, 0, 0,
+			g->draw_width,
+			g->draw_height);
+
+    for (i = 0; i < g->draw_width; i++)
+		g->pos [i] = g->draw_height - 1;
+
+    for (j = 0; j < g->n; j++)
+    {
+		gdk_gc_set_foreground (g->gc, &(g->colors [j]));
+
+		for (i = 0; i < g->draw_width; i++) {
+			if (g->data [i][j] != 0) {
+				gdk_draw_line (g->pixmap, g->gc,
+					       g->draw_width - i - 1,
+					       g->pos[i],
+					       g->draw_width - i - 1,
+					       g->pos[i] - (g->data [i][j] - 1));
+
+				g->pos [i] -= g->data [i][j];
+			}
+		}
+    }
+	
+    gdk_draw_drawable (gtk_widget_get_window (g->disp),
+		       style->fg_gc [gtk_widget_get_state (g->disp)],
+		       g->pixmap,
+		       0, 0,
+		       0, 0,
+		       g->draw_width,
+		       g->draw_height);
+}
+
+/* Updates the load graph when the timeout expires */
+static gboolean
+load_graph_update (LoadGraph *g)
+{
+    if (g->data == NULL)
+	return TRUE;
+
+    shift_right(g);
+
+    if (g->tooltip_update)
+	multiload_applet_tooltip_update(g);
+
+    g->get_data (g->draw_height, g->data [0], g);
+
+    load_graph_draw (g);
+    return TRUE;
+}
+
+void
+load_graph_unalloc (LoadGraph *g)
+{
+    guint i;
+
+    if (!g->allocated)
+		return;
+
+    for (i = 0; i < g->draw_width; i++)
+    {
+		g_free (g->data [i]);
+    }
+
+    g_free (g->data);
+    g_free (g->pos);
+
+    g->pos = NULL;
+    g->data = NULL;
+    
+    g->size = mate_panel_applet_mateconf_get_int(g->multiload->applet, "size", NULL);
+    g->size = MAX (g->size, 10);
+
+    if (g->pixmap) {
+		g_object_unref (g->pixmap);
+		g->pixmap = NULL;
+    }
+
+    if (g->gc) {
+		g_object_unref (g->gc);
+		g->gc = NULL;
+    }
+
+    g->allocated = FALSE;
+}
+
+static void
+load_graph_alloc (LoadGraph *g)
+{
+    guint i;
+
+    if (g->allocated)
+		return;
+
+    g->data = g_new0 (gint *, g->draw_width);
+    g->pos = g_new0 (guint, g->draw_width);
+
+    g->data_size = sizeof (guint) * g->n;
+
+    for (i = 0; i < g->draw_width; i++) {
+		g->data [i] = g_malloc0 (g->data_size);
+    }
+
+    g->allocated = TRUE;
+}
+
+static gint
+load_graph_configure (GtkWidget *widget, GdkEventConfigure *event,
+		      gpointer data_ptr)
+{
+    GtkAllocation allocation;
+    LoadGraph *c = (LoadGraph *) data_ptr;
+    
+    load_graph_unalloc (c);
+
+    gtk_widget_get_allocation (c->disp, &allocation);
+
+    c->draw_width = allocation.width;
+    c->draw_height = allocation.height;
+    c->draw_width = MAX (c->draw_width, 1);
+    c->draw_height = MAX (c->draw_height, 1);
+    
+    load_graph_alloc (c);
+ 
+    if (!c->pixmap)
+	c->pixmap = gdk_pixmap_new (gtk_widget_get_window (c->disp),
+				    c->draw_width,
+				    c->draw_height,
+				    gtk_widget_get_visual (c->disp)->depth);
+
+    gdk_draw_rectangle (c->pixmap,
+			(gtk_widget_get_style (widget))->black_gc,
+			TRUE, 0,0,
+			c->draw_width,
+			c->draw_height);
+    gdk_draw_drawable (gtk_widget_get_window (widget),
+		       (gtk_widget_get_style (c->disp))->fg_gc [gtk_widget_get_state (widget)],
+		       c->pixmap,
+		       0, 0,
+		       0, 0,
+		       c->draw_width,
+		       c->draw_height);
+
+    return TRUE;
+}
+
+static gint
+load_graph_expose (GtkWidget *widget, GdkEventExpose *event,
+		   gpointer data_ptr)
+{
+    LoadGraph *g = (LoadGraph *) data_ptr;
+
+    gdk_draw_drawable (gtk_widget_get_window (widget),
+		       (gtk_widget_get_style (widget))->fg_gc [gtk_widget_get_state (widget)],
+		       g->pixmap,
+		       event->area.x, event->area.y,
+		       event->area.x, event->area.y,
+		       event->area.width, event->area.height);
+
+    return FALSE;
+}
+
+static void
+load_graph_destroy (GtkWidget *widget, gpointer data_ptr)
+{
+    LoadGraph *g = (LoadGraph *) data_ptr;
+
+    load_graph_stop (g);
+    netspeed_delete(g->netspeed_in);
+    netspeed_delete(g->netspeed_out);
+
+    gtk_widget_destroy(widget);
+}
+
+static gboolean
+load_graph_clicked (GtkWidget *widget, GdkEventButton *event, LoadGraph *load)
+{
+	load->multiload->last_clicked = load->id;
+
+	return FALSE;
+}
+
+static gboolean
+load_graph_enter_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
+{
+	LoadGraph *graph;
+	graph = (LoadGraph *)data;
+
+	graph->tooltip_update = TRUE;
+	multiload_applet_tooltip_update(graph);
+
+	return TRUE;
+}
+
+static gboolean
+load_graph_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
+{
+	LoadGraph *graph;
+	graph = (LoadGraph *)data;
+
+	graph->tooltip_update = FALSE;
+
+	return TRUE;
+}
+
+static void
+load_graph_load_config (LoadGraph *g)
+{
+	
+    gchar name [BUFSIZ], *temp;
+    guint i;
+
+	if (!g->colors)
+		g->colors = g_new0(GdkColor, g->n);
+		
+	for (i = 0; i < g->n; i++)
+	{
+		g_snprintf(name, sizeof(name), "%s_color%u", g->name, i);
+		temp = mate_panel_applet_mateconf_get_string(g->multiload->applet, name, NULL);
+		if (!temp)
+			temp = g_strdup ("#000000");
+		gdk_color_parse(temp, &(g->colors[i]));
+		g_free(temp);
+	}
+}
+
+LoadGraph *
+load_graph_new (MultiloadApplet *ma, guint n, const gchar *label,
+		guint id, guint speed, guint size, gboolean visible, 
+		const gchar *name, LoadGraphDataFunc get_data)
+{
+    LoadGraph *g;
+    MatePanelAppletOrient orient;
+    
+    g = g_new0 (LoadGraph, 1);
+    g->netspeed_in = netspeed_new(g);
+    g->netspeed_out = netspeed_new(g);
+    g->visible = visible;
+    g->name = name;
+    g->n = n;
+    g->id = id;
+    g->speed  = MAX (speed, 50);
+    g->size   = MAX (size, 10);
+    g->pixel_size = mate_panel_applet_get_size (ma->applet);
+    g->tooltip_update = FALSE;
+    g->show_frame = TRUE;
+    g->multiload = ma;
+		
+    g->main_widget = gtk_vbox_new (FALSE, 0);
+
+    g->box = gtk_vbox_new (FALSE, 0);
+    
+    orient = mate_panel_applet_get_orient (g->multiload->applet);
+    switch (orient)
+    {
+    case MATE_PANEL_APPLET_ORIENT_UP:
+    case MATE_PANEL_APPLET_ORIENT_DOWN:
+    {
+	g->orient = FALSE;
+	break;
+    }
+    case MATE_PANEL_APPLET_ORIENT_LEFT:
+    case MATE_PANEL_APPLET_ORIENT_RIGHT:
+    {
+	g->orient = TRUE;
+	break;
+    }
+    default:
+	g_assert_not_reached ();
+    }
+    
+    if (g->show_frame)
+    {
+	g->frame = gtk_frame_new (NULL);
+	gtk_frame_set_shadow_type (GTK_FRAME (g->frame), GTK_SHADOW_IN);
+	gtk_container_add (GTK_CONTAINER (g->frame), g->box);
+	gtk_box_pack_start (GTK_BOX (g->main_widget), g->frame, TRUE, TRUE, 0);
+    }
+    else
+    {
+	g->frame = NULL;
+	gtk_box_pack_start (GTK_BOX (g->main_widget), g->box, TRUE, TRUE, 0);
+    }
+
+    load_graph_load_config (g);
+
+    g->get_data = get_data;
+
+    g->timer_index = -1;
+
+    if (g->orient)
+    	gtk_widget_set_size_request (g->main_widget, -1, g->size);
+    else
+        gtk_widget_set_size_request (g->main_widget, g->size, -1);
+
+    g->disp = gtk_drawing_area_new ();
+    gtk_widget_set_events (g->disp, GDK_EXPOSURE_MASK |
+				    GDK_ENTER_NOTIFY_MASK |
+    				    GDK_LEAVE_NOTIFY_MASK |
+				    GDK_BUTTON_PRESS_MASK);
+	
+    g_signal_connect (G_OBJECT (g->disp), "expose_event",
+			G_CALLBACK (load_graph_expose), g);
+    g_signal_connect (G_OBJECT(g->disp), "configure_event",
+			G_CALLBACK (load_graph_configure), g);
+    g_signal_connect (G_OBJECT(g->disp), "destroy",
+			G_CALLBACK (load_graph_destroy), g);
+    g_signal_connect (G_OBJECT(g->disp), "button-press-event",
+		        G_CALLBACK (load_graph_clicked), g);
+    g_signal_connect (G_OBJECT(g->disp), "enter-notify-event",
+                      G_CALLBACK(load_graph_enter_cb), g);
+    g_signal_connect (G_OBJECT(g->disp), "leave-notify-event",
+                      G_CALLBACK(load_graph_leave_cb), g);
+	
+    gtk_box_pack_start (GTK_BOX (g->box), g->disp, TRUE, TRUE, 0);    
+    gtk_widget_show_all(g->box);
+
+    return g;
+}
+
+void
+load_graph_start (LoadGraph *g)
+{
+    if (g->timer_index != -1)
+		g_source_remove (g->timer_index);
+
+    g->timer_index = g_timeout_add (g->speed,
+                                    (GSourceFunc) load_graph_update, g);
+}
+
+void
+load_graph_stop (LoadGraph *g)
+{
+    if (g->timer_index != -1)
+		g_source_remove (g->timer_index);
+    
+    g->timer_index = -1;
+}